Hal Richardson

Follow

Person

Westborough, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Backflow prevention for high pressure gradient systems
- Patent number 7,754,075
- Issue date Jul 13, 2010
- Waters Technologies Corporation
- Hal Richardson
- G01 - MEASURING TESTING
Information Patent Grant
Backflow prevention for high pressure gradient systems
- Patent number 7,396,469
- Issue date Jul 8, 2008
- Waters Investments Limited
- Richard W. Andrews
- G01 - MEASURING TESTING
Information Patent Grant
Backflow prevention for high pressure gradient systems
- Patent number 6,780,315
- Issue date Aug 24, 2004
- Waters Investments Limited
- Hal Richardson
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
BACKFLOW PREVENTION FOR HIGH PRESSURE GRADIENT SYSTEMS
- Publication number 20080251141
- Publication date Oct 16, 2008
- Waters Investments Limited
- Hal Richardson
- G01 - MEASURING TESTING
Information Patent Application
Backflow prevention for high pressure gradient systems
- Publication number 20050008516
- Publication date Jan 13, 2005
- Waters Investments Limited
- Hal Richardson
- G01 - MEASURING TESTING
Information Patent Application
Backflow prevention for high pressure gradient systems
- Publication number 20040108273
- Publication date Jun 10, 2004
- Waters Investments Limited
- Hal Richardson
- G01 - MEASURING TESTING